Vikings linebacker Chad Greenway will be sidelined until the start of training camp as he prepares to have minor arthroscopic knee surgery. Greenway, who missed Tuesday's Organized Team Activities at Winter Park, will undergo the procedure on Wednesday and will miss the rest of this week’s OTAs as well as next week’s three-day mini-camp.

Said coach Leslie Frazier: “He had a little tension in his knee. ... Just some tenderness in the knee. And we ended up doing an MRI and saw some things in there that we thought we needed to go in and clean up. And that’s what we’re going to do.”

The Vikings are due to report to Mankato for training camp on July 25 with practice opening the following day. All expectations are that Greenway will be back at full strength by then.

"We just wanted to get it done now," Frazier said, "rather than run into a situation when we get to camp where it continued to bother him and then there'd be some issues that we'd have to deal with there."

Among the other big names who missed Tuesday's OTA work:

Jared Allen was present at Winter Park but worked inside with the training staff as he continues rehabilitating his shoulder.

Adrian Peterson was also present but given the day off by the coaching staff. Peterson worked out inside the building.